Recently, there have been several attempts to find a correlation between QPOs and iron lines to constrain the origin of the QPOs [1]}, [2]}. The basic idea behind such an attempt is that both the QPOs and the Fe-line possibly originate from the inner part of the accretion disk. Therefore, they can provide an independent signature of the geometry of the inner disk. It has been found that the variation in the QPO frequency and the QPO phase is correlated with the variation of the iron line centroid frequency [3]}, [4]}. These studies reflect the geometric origin of QPOs. However, our current findings are limited to explore any such correlations between QPO and Fe-line because of the limited extent of our observations. In future work, we plan to use better timing and multi-epoch data from ASTROSAT [5]}, [6]}, spanning over several months, along with our current results, to study the QPOs with more physical explanations and rigorously updated physical models.
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